andy i am facing a similar problem i.e if the wall shows a pulsating motion i.e. expansion and contraction and this propogates as a wave i.e if the boundary coordinates of wall are r = A(1 + cos ( 2*pi *(Z-ct)/ &lambda; )) where A is the amplitude Z is the length of the track and c is the wave speed. This can happen if the wall is elastic in nature something like blood vessels or the food pipe i.e. oesophagus.

kharicha

January 18, 2006 06:35

Re: Can Fluent modify the wall function by UDF?

You can find in litterature the implementation of the v2f model in fluent. I think they modified the wall functions...have a look.